NEW YORK — An elevator has been used to get people inside a skyscraper building security office, where the office of a Manhattan building security official was raided last week, police said.

The elevator was used to rush into the building last Wednesday when a security guard was attempting to enter, said Police Department spokesman Anthony Guglielmi.

It was part of a plan to seize evidence, he said.

Gugliilmi said the elevator was removed at the last minute because it was not equipped with an alarm system, and that a fire alarm was installed after the elevator stopped.

A fire alarm is needed to prevent a fire or explosion in the elevator, Guglilmi told The Associated Press.

At least one of the security guards was injured, and a second guard was injured by a piece of debris falling from the building.

Guggliili said there was no evidence that any explosives were used, and it’s unclear if the incident was related to the U.S. National Security Agency’s (NSA) hacking of the offices of the World Trade Center’s security contractor.